The method discussed in the article utilizes Microsoft's Power Platform Build Tools. This is just one approach, and you can find other options here: https://learn.microsoft.com/en-us/azure/architecture/solution-ideas/articles/azure-devops-continuous-integration-for-power-platform. However, the best approach depends on the specifics of your project.

In terms of cost, Microsoft's Power Platform Build Tools for Azure DevOps and GitHub Actions are available at no additional charge.